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Semester 1 Eco Review

Total questions: 70

Worksheet time: 1hrs 21mins

Name
Class
Date
1.
Matt wants to test which liquid freezes first: Pepsi, milk, or apple juice.  He poured 50 mL of each into separate glasses and placed them in his freezer.  Every ten minutes, he checked his freezer and recorded his observations.  Pepsi froze first, followed by apple juice and then milk.  What is his dependent variable?
a)
type of liquid
b)
length of time until frozen
c)
amount of liquid
d)
location of freezer
2.
Betty wants to test which type of phone has the longest battery life.  She is comparing iPhone 6 Plus, Samsung S5,  and a Droid.  She bought each phone new and charged them completely to 100%.  Then, she turned each phone on and timed how long until the battery ran out.  What is the independent variable in her experiment?
a)
brand of phone
b)
time until battery ran out
c)
time it took to charge to 100%
d)
outlet used for charging
3.

The one factor that a scientist changes during an experiment. (It affects the results of the experiment).

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

4.
A testable answer to a scientific question
a)
Question
b)
Observation
c)
Hypothesis
d)
Experiment
5.

The factors that stay the same throughout the experiment.

a)

Controlled Variable

b)

Dependent Variable

c)

Independent Variable

6.

Organism

a)

Made up of organs that work together to prefrom a specific task

b)

Basic unit of life

c)

Made of organ systems that work together to sustain life

d)

Made up of cells that have the same shape and function

7.
Multiple organisms of the same species describes a
a)
organism
b)
population
c)
community
d)
ecosystem
8.
What do ecosystems have that the other three levels of organization do not have?
a)
living things
b)
biotic factors
c)
abiotic factors
d)
organisms
9.
A forest full of many kinds of trees and grasses is an example of a
a)
group
b)
organism
c)
population
d)
community
10.
which is another word for an organism?
a)
abiotic factor
b)
biotic factor
c)
nonliving thing
11.

An organism that only eats plants

a)

 Niche

b)

Herbivore

c)

Carnivore

d)

Producer

12.

Energy molecule

a)

ATP

b)

C₆H₁₂O₆

c)

Light Photon

d)

ADP

13.

An organism that eats both consumers and 

      producers

a)

Spagivore

b)

Carnivore

c)

Omnivore

d)

Herbivore

14.

Organisms that do not make their own food

a)

Autotroph

b)

Prodcucer

c)

Chemotroph

d)

Consumer

15.

An organism that breaks down dead organisms 

        (ex: bacteria, fungus)

a)

Heterotroph

b)

Consumer

c)

Scavenger

d)

Decomposer

16.

A diagram of one energy flow/path through an 

        ecosystem

a)

Food Pyramid

b)

Food Chain

c)

Food Web

d)

Food Circle

17.

A diagram that shows all energy relationships

       

a)

Food Pyramid

b)

Food Chain

c)

Food Web

d)

Food Circle

18.

Organisms that make their own food

a)

Heterotroph

b)

Chemotroph

c)

Consumer

d)

Producer

19.

The role or job that a species has in an 

         ecosystem

a)

Niche

b)

Producer

c)

Consumer

d)

Omnivore

20.
Who is the producer in this food chain?
a)
The rabbit
b)
The grass
c)
The fox
d)
There is no such thing as a producer
21.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
22.
Overlapping food chains in an ecosystem make up....
a)
food web
b)
food chain
c)
niche
d)
symbiosis
23.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
24.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
25.

True or False. In this pyramid the consumers on each level only get about 10 percent of energy that the plants have stored.

a)

True

b)

False

26.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
27.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
28.
What is the pigment in chloroplasts that performs photosynthesis?
a)
Chlorosynthesis
b)
Chlorophyll
c)
ADP
d)
Electron Transport
29.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
30.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
31.
Which of the following go through the process of photosynthesis?
a)
bees
b)
algae
c)
humans
d)
mushrooms
32.
What is the correct equation for photosynthesis?
a)
C6H12O6 + 6O2 --> 6CO2 + 6H2O
b)
6CO2 + 6O2 --> C6H12O6  + 6H2O
c)
 6CO2 + 6O2 --> 6H2O + C6H12O6
d)
6CO2 + 6H2O  -->  6O2 + C6H12O6
33.
Which of the following is an example of a HETEROTROPH?
a)
Grass
b)
Algae
c)
Lemon Tree
d)
Bear
34.
Which organisms perform Photosynthesis?
a)
Only Autotrophs
b)
Only Heterotrophs
c)
Autotrophs and Heterotrophs
35.
What do plants need for the photosynthesis process?
a)
a camera and tripod
b)
light, carbon dioxide, and water
c)
roots, flowers, and bees
d)
soil, air, and oxygen
36.
What are the reactants of photosynthesis?
a)
carbon dioxide and oxygen
b)
water and oxygen
c)
carbon dioxide and water
d)
water and glucose
37.
Plants give off _____ that animals need to take in;  animals give off _____ that plants need to take in.
a)
oxygen; carbon dioxide
b)
nitrogen; oxygen
c)
carbon dioxide; oxygen
d)
helium; nitrogen
38.

During photosynthesis, the atoms in the water and carbon dioxide ________ to form oxygen and glucose.

a)

Change

b)

Multiply

c)

Rearrange

d)

Disappear

39.

Plants are called producers because they...

a)

Produce energy

b)

Make their own food

c)

Are edible

d)

Grow from seeds

40.
The formula for glucose is...
a)
C12 H22 O11
b)
NaCl
c)
NaOH
d)
C6 H12 O6
41.

How does most of the water needed by the plant get into its leaves?

a)

It enters through the stomata

b)

The roots absorb it and then it travels up the stem

c)

It's made during a chemical reaction in the leaf

d)

The flowers capture water and deliver it to the leaves

42.

In which way are photosynthesis and cellular respiration similar?

a)

Both processes destroy energy.

b)

Both create energy.

c)

Photosynthesis breaks down sugar while cellular respiration produces sugar.

d)

Both processes transfer energy from one form to another.

43.

What is the correct equation for cellular respiration?

a)

oxygen + sugar -> carbon dioxide + water + Energy

b)

carbon dioxide + sugar + Energy -> carbon dioxide + water

c)

carbon dioxide + water -> oxygen + sugar + Energy

d)

carbon dioxide + water + Energy -> oxygen + sugar

44.

What is important about cellular respiration?

a)

It produces energy from the sun.

b)

It forms sugar.

c)

It transforms sugar into a usable form of energy (ATP)

d)

Only plants perform this process.

45.

One molecule produced by animals during cellular respiration is

a)

carbon dioxide

b)

glucose

c)

oxygen

d)

chlorophyll

46.
The following diagram shows the relationship between photosynthesis and respiration.  What products of photosynthesis are starting material for cellular respiration?
a)
glucose and oxygen
b)
heat energy and ATP
c)
carbon dioxide and water
d)
light energy and chlorophyll
47.

Glucose molecules store _____________.

a)

chemical energy

b)

kinetic energy

c)

gravitational potential energy

d)

heat energy

48.

Your food is digested into ______________.

a)

Hamburgers

b)

Glucose

c)

Fructose

d)

Sucrose

49.
What is cellular respiration?
a)
the breakdown of glucose  to release ATP
b)
the breakdown of glucose to release NADH
c)
the breakdown of glucose to release FADH
d)
the breakdown of glucose to release carbon
50.

Which statement is true regarding cellular respiration?

a)

The reactants of cellular respiration are identical to the reactants of photosynthesis.

b)

The reactants of cellular respiration are obtained from the products of photosynthesis.

c)

The products of cellular respiration are the same as the products of photosynthesis

d)

Cellular respiration only occurs in autotrophs, photosynthesis occurs only in heterotrophs.

51.

A relationship between two organisms in which one organism benefits and the other is not affected...

a)

Mutualism

b)

Competition

c)

Parasitsm

d)

Commensalism

52.

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle are unaware if they are there or not.

a)

mutualism

b)

commensalism

c)

competition

d)

parasitism

53.

What does symbiosis mean?

a)

Living separately, no relationship between 2 species

b)

Living together, close relationship between 2 species

c)

Living separately, long distance relationship between 2 species

d)

When one species kills and eats another

54.

A relationship between two organisms in which both organisms benefit

a)

Mutualism

b)

Competition

c)

Parasitsm

d)

Commensalism

55.

Fungi form lichens (a small plant) by living in a close relationship with algae. The fungus provides a protective home for the algae, and gathers nutrients from rainwater. The algae gathers energy from the sun using photosynthesis. Both organisms share nutrients with each other.

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

56.

Interactions occurring between organisms of the same species.

a)

Inter-specific interactions

b)

competition

c)

balance

d)

Intra-specific interactions

57.

Example of Intra-specific Interactions

a)

Moose compete for mates

b)

birds fly south

c)

bears hibernate

d)

plants go through photosynthesis

58.

Hawks and foxes compete for mice for food.

a)

Interference competition

b)

Inter-specific interactions

c)

Mitosis

d)

Meiosis

59.

Interactions occurring between two or more species.

a)

Interference Competition

b)

Competition

c)

Photosynthesis

d)

Inter-specific interactions

60.
oxygen is a gas produced by _ and used by  _ 
a)
plants and animals 
b)
photosynthesis and carbon dioxide 
c)
animals and plants 
d)
carbon dioxide and photosynthesis
61.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
62.

Carbon molecules cannot be created or destroyed

a)

True

b)

False

c)

Not enough information to answer

63.

____________________ is a part of oceans, air, rocks, soil, and all living things.

a)

Nitrogen

b)

Water

c)

Carbon

d)

Silver

64.
How is combustion similar to cellular respiration?
a)
It can occur only in living things.
b)
It removes energy from the environment.
c)
It increases the amount of carbon dioxide in the environment.
d)
It needs glucose and oxygen to occur.
65.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
66.

How do animals get carbon?

a)

By eating plants and or other animals.

b)

They absorb it from the atmosphere.

c)

From the ground

d)

They do not get carbon from anywhere.

67.
When taken to a new habitat, non-native plants often threaten native plants of the new habitat.  Why do they do this?
a)
Non-native plants are able to mutate rapidly
b)
Non-native  plants cause native animals to relocate
c)
Non-native plants are able to be used for medicine
d)
Non-native plants compete with native plants for resources
68.
What is an invasive species?
a)
A native (naturally found) species which are added to an area. 
b)
A non-native (not naturally found) species added to an area. 
c)
A keystone species in an environment
d)
none of the above
69.

Invasive species alter the ecosystem by _____ in number quickly. This leads to _____ food for the native species.

a)

increasing, less

b)

increasing, more

c)

decreasing, less

d)

decreasing, more

70.
Exotic or invasive species leads to all of these problems except
a)
increased biodiversity
b)
loss of biodiversity
c)
disease
d)
loss of native species

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